... also closed (anti-) function can be widely used and Water dams, roads, airports, water, housing, environmental protection, and many other fields in ... way, the road should be designed as that kind of water proofing, heat preservation, and wind proof. No leakage floor in the ... prevent the ice swelling, salt swelling in salty area, thin water partition should be set up, 40-50cm thick. Anti-filtration ...